Device for the pouring of metals into moulds



Oct. 11, 1966 H. P. HABERLIN 3,277,539

DEVICE FOR THE POURING 0F METALS INTO MOULDS Filed Dec. 18, 1963 United States Patent 3,277,539 DEVICE FOR THE POURIN G 0F METALS INTO MOULDS Hans Paul Hiiberlin, Schafi'hausen, Switzerland, assignor to Isenschmid, Stahlbau Metallbau, Kussnacht am Rigi, Switzerland Filed Dec. 18, 1963, Ser. No. 331,399

Claims priority, application Switzerland, June 6, 1963,

7,124/ 63 2 Claims. (Cl. 2282) The present invention relates to a device for the pouring of metals into moulds in foundries, and more particularly to an embodiment of a pouring device constructed for facilitating the pouring of molten metal into moulds. For the transport of the casting ladle from the melting furnace to the mould a trolley is used, which runs on a rail and on which a rod mechanism is suspended, which is provided with holding means.

Pouring devices of the aforesaid kind are already known, in which the casting ladle for the pouring of the molten metal into a mould is raised, lowered and tipped by the aid of an electric motor provided with switch-and control-means, of levers and pneumatic means.

The invention has the primary object of providing a pouring device, by which the pouring of molten metal into mould-s is facilitated, particular emphasis being placed on maintaining a high resistance to torsion of the holders of the casting ladle for the purpose of improving the guidance of the latter. It is another object of the invention to reduce the first costs of such a device as compared with the embodiments hitherto known.

With these and other objects in view, which will become apparent later from this specification and the accompanying drawings, I provide a device for the pouring of metals into moulds, comprising in combination: a vertical frame having an upper and a lower transverse member suspended with vertical freedom of movement on said trolley, a first electric motor suspended on said trolley, a first tackle in driving connection with said first electric motor and engaging said upper transverse frame member and when in operation driven by said first electric motor raising and lowering, respectively, said frame, a second electric motor suspended on said frame, a second tackle in driving connection with said second electric motor, a yoke suspended on said second tackle, a casting ladle pivotally attached to said yoke about a first horizontal axis substantially at its centre of gravity and having a spout pivotally attached to said lower transverse frame member about a second horizontal axis and in operation being tipped about the latter when being raised by said second electric motor, second tackle and yoke.

These and other features of my said invention will be clearly understood from the following description of a preferred embodiment thereof given by way of example with reference to the accompanying drawing, in which:

FIG. 1 is a side elevation,

FIG. 2 is a front elevation, and

FIG. 3 is a plan view of the device according to the invention.

With reference to FIGS. 1 to 3, the pouring device is suspended in the usual manner movably on a trolley 50, which is in turn guided on a rail 48. With this trolley 50 a U-profile girder is fixedly connected, on which the members or individual components required for the support and the operation of a casting ladle 11 are fixed. For the support of the casting ladle 11 a frame is provided, which consists of the parts 12, 42, 14 and 15, this frame being suspended on two brackets 5 and 35 of a transverse girder 1, two arms 7 and 37, two joints 8 and 38, two further arms 9 and 39 and two transverse pins 13 Patented Oct. 11, 1966 and 43, while the members required for the raising, lowering and tipping of the casting ladle 11 consist mainly in two electric motors 3 and 4 with control members and switch members for the operation of two chain tackles 27 and 31. On a U-profile girder 47 fixed to the trolley said transverse girder 1 is mounted pivotally about its central axis 45. The transverse girder 1 is moreover provided in its middle with an eyelet 2, on which the electric motor 3 is suspended by means of a draw hook 26. At both sides of the eyelet 2 the brackets 5 and 35, respectively, are arranged at each end of the transverse girder 1. Each bracket 5 and 35 is provided with a pin 6 and 36, respectively, on which the arms 7 and 37 are pivotally suspended, which are connected with one another by transverse bar 23. The arms 7 and 37 are in connection, by means of said two joints 8 and 38, with said two further arms 9 and 39, and are in turn fixedly connected with one another by a bar 10 for the purpose of stiffening and uniform guidance of movements. At the ends opposite the joints 8 and 38 the arms 9 and 39 are provided with said pins 13 and 43, into which said two rods 12 and 42 are hooked pivotally. The rods 12 and 42 are connected with said two transverse frame members 14 and 15 and form with them a frame. 011 the lower transverse connection 15 the casting ladle 11 is pivotally mounted about the trunnions 16 and 17 arranged, which are arranged at the spout end 21. In the region of the centre of gravity of the casting ladle 11 moreover two further pins 19 and 49 are arranged at the outer wall surface, by means of which the casting ladle is suspended on a yoke 34. The yoke 34 is provided on top in the middle with a transverse pin 33 engaged by the draw hook 32 of a chain tackle 31. The chain tackle 31 is driven in the usual manner by an electric motor 4 and associated control members. On the electric motor 4 a draw hook 30 is fixedly mounted, which through an eyelet 29 fixedly connected with the transverse frame member 14 is in connection with a further draw hook 28 of said chain tackle 27. This chain tackle 27 is driven in the usual manner by an electric motor 3 and associated control member. The electric motor 3 is hooked at the middle of the transverse girder 1, together with its associated control members, by means of said draw hook 26 and eyelet 2, as described hereinabove.

The operation of the pouring device is as follows:

The molten metal is firstly poured in the quantity desired into the casting ladle 11. For this purpose the casting ladle 11 is raised by the aid of the electric motor 3 and chain tackle 27 so far that the casting ladle 11 reaches the optimum position with respect to the discharge opening of a melting furnace (not shown). After the process of pouring into the casting ladle 11 is terminated, the pouring device suspended on the trolley 50 is moved along the runner rail 48 to a mould ready for having the molten metal poured into it. The casting ladle 11 is then lowered or raised to such an extent that the spout 21 of the casting ladle 11 comes to lie above the ingate of the mould, whereby the outlet point on the spout end 21 is brought permanently into a predetermined position. By actuating the electric motor 4 designed for the tipping operation of the casting ladle 11, this casting ladle 11, whose suspending trunnions 16 and 17 are rotatably journalled in the lower transverse frame member 15, is tipped. Owing to this arrangement of the trunnions 16 and 17 journalled in the lower transverse frame member 15 it is made considerably easier for the casting operative to determine in advance the optimum position of the spout end 21 relative to the ingate of the mould, since the spout end 21 even upon a tipping movement of the casting ladle 11 hardly varies the position it had previously assumed.

The pouring device according to the invention allows an arrangement of ingates, which is very favorable to the filling operation of the mould.

For the raising, lowering and tipping merely two switch buttons are required, whereby any physical effort is obviated. A'further advantage of the device consists in the possibility of keeping the casting spout of the casting ladle at a constant small distance closely above the ingate while at the same tipping and raising or lowering the ladle. The parallel guidance by tWo joints is torsionresistant, whereby an improved guidance is attained as compared with known devices of this kind.

By the present invention a pouring device has been provided, which assures a high casting performance with comparatively low first costs.

While I have herein described and illustrated in the accompanying drawing what may be considered a typical and particularly favourable embodiment of my said invention, I wish it to be understood, that I do not limit myself to the particular details described and illustrated;

for obvious modifications will occur to a person skilled in the art.

What I claim as my invention, and desire to secure by Letters Patent is:

1. A pouring device which is suspended from a trolley, comprising a ladle, means for lifting, lowering and tilting said ladle, said means for the purpose of tilting the ladle being provided with an electric motor suspended on a transverse connector and with control member and switching elements, said motor operating a chain pull having a yoke suspended therefrom, said pouring ladle being provided with four pivots which cause said ladle on one hand to be suspended in said yoke and on the other hand cause said ladle to be pivotally suspended on said transverse connector, a second electric motor with control members and switching elements and suspended on a transverse beam being used for raising and lowering said pouring ladle, said second motor operating a frame suspended on said chain pull, characterized by a triangular jointed parallel suspension of said frame (12, 14, 15, 42) with which the frame is suspended on two suspensions (5 and 35) of the transverse beam (1), on two arms (7 and 37 on two pivot joints (8 and 38), and on two additional arms (9 and 39) at each side of said frame, said arms being connected by two transverse bolts (13 and 43) connecting the beam and frame, the opposite arms (7 and 37) being connected by a transverse bar (23) and the arms (9 and 39) connected by a transverse bar (10), whereby said opposite pairs of bars will be held in parallel relation during the vertical raising and lowering movement of said frame.

2. A pouring device for molten metal and the like, comprising a horizontal trackway, a beam suspended from and movable along said trackway, a frame structure supported by said beam having side, lower and upper frame members, a pair of pivoted levers connecting each of the upper ends of said side bars to said beam, each pair of pivoted levers being arranged in spaced parallel relation, a transverse bar connecting each of the levers of each pair of said pivoted levers, said lower frame memher being rigidly attached to said side frame members and shaped to provide a curved portion and a laterally extending offset opposed portion, a pouring ladle mounted between said curved and laterally extending portions, an offset pivotal connection between said ofiset portion and said ladle adjacent the pouring spout thereof, a yoke pivotally connected to said ladle, motor driven flexible hoist mechanism connected between said beam and upper frame member to raise and lower said frame structure within the limits of said pivoted levers, and an independent motor driven flexible hoist mechanism connected be-. tween the yoke of said ladle and the upper frame member of said frame structure to tilt said ladle about the axis of said offset pivot connection, whereby said frame structure will be raised and lowered within the limits of movement of said levers and said ladle can be independently tilted about its offset pivot connection and pour metal at a definite point from the pouring spout of said ladle.

References Cited by the Examiner UNITED STATES PATENTS 564,770 7/1896 Aiken 212 817,063 4/1906 Heichert 2282 2,933,198 4/1960 Firestone et a1 -212-l28 3,104,016 9/1963 Harry 214658 J. SPENCER OVERHOLSER, Primary Examiner.

R. D. BALDWIN, Assistant Examiner. 

1. A POURING DEVICE WHICH IS SUSPENDED FROM A TROLLEY, COMPRISING A LADLE, MEANS FOR LIFTING, LOWERING AND TILTING SAID LADLE, SAID MEANS FOR THE PURPOSE OF TILTING THE LADLE BEING PROVIDED WITH AN ELECTRIC MOTOR SUSPENDED ON A TRANSVERSE CONNECTOR AND WITH CONTROL MEMBER AND SWITCHING ELEMENTS, SAID MOTOR OPERATING A CHAIN PULL HAVING A YOKE SUSPENDED THEREFROM, SAID POURING LADLE BEING PROVIDED WITH FOUR PIVOTS WHICH CAUSE SAID LADLE ON ONE HAND TO BE SUSPENDED IN SAID YOKE AND ON THE OTHER HAND CAUSE SAID LADLE TO BE PIVOTALLY SUSPENDED ON SAID TRANSVERSE CONNECTOR, A SECOND ELECTRIC MOTOR WITH CONTROL MEMBERS AND SWITCHING ELEMENTS AND SUSPENDED ON A TRANSVERSE BEAM BEING USED FOR RAISING AND LOWERING SAID POURING LADLE, SAID SECOND MOTOR OPERATING A FRAME SUSPENDED ON SAID CHAIN PULL, CHARACTERIZED BY A TRIANGULAR JOINTED PARALLEL SUSPENSION OF SAID FRAME (12 14, 15, 42) WITH WHICH THE FRAME IS SUSPENDED ON TWO SUSPENSIONS (5 AND 35) OF THE TRANSVERSE BEAM (1), ON TWO ARMS (7 AND 37) ON TWO PIVOT JOINTS (8 AND 38), AND ON TWO ADDITIONAL ARMS (9 AND 39) AT EACH SIDE OF SAID FRAME, SAID ARMS BEING CONNECTED BY TWO TRANSVERSE BOLTS (13 AND 43) CONNECTING THE BEAM AND FRAME, THE OPPOSITE ARMS (7 AND 37) BEING CONNECTED TO A TRANSVERSE BAR (23) AND THE ARMS (9 AND 39) CONNECTED BY A TRANSVERSE BAR (10), WHEREBY SAID OPPOSITE PAIRS OF BARS WILL BE HELD IN PARALLEL RELATION DURING THE VERTICAL RAISING AND LOWERING MOVEMENT OF SAID FRAME. 